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Publication numberUS3704515 A
Publication typeGrant
Publication dateDec 5, 1972
Filing dateDec 10, 1969
Priority dateDec 10, 1969
Publication numberUS 3704515 A, US 3704515A, US-A-3704515, US3704515 A, US3704515A
InventorsRobert D Nelson
Original AssigneeBurroughs Corp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Method for mounting connectors on printed circuit boards
US 3704515 A
Abstract
A method for mounting a connector with molded-in contacts on a printed circuit board using adhesive material for temporarily bonding the connector to the board during the time that the terminal pins of the molded-in contacts are permanently bonded to the board.
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Description  (OCR text may contain errors)

United States Patent [131 3,704,515 Nelson 14 1 Dec. 5, 1972 [s41 METHODFOR MOUNTING 3,330,250 10/1967 Sanz m1. ..29/626 x I CONNECTORS ON PRINTED CIRCUIT 3,388,465 6/1968 Johnson ..29/626 BOARDS 3,538,389 11/1970 Leoesque etal ..156/249 x [72] Inventor: Robert D. Nelson, Covina, Calif. OTHER PUBLICATIONS Assignee! '"8 P i Detroit Printed and Integrated Circuitry, by Schlabach & Mlch- Rider, pages 254 and 255.

22 l D 10 1969 IBM Tech Disclosure, VOl. 9 NO. 11 April 1967, by Penna et al., entitled Assembly of Circuit Cards [21] APPI- N04 883,861 through the use of Tape Adhesives, Page 1625.

[52] US. Cl. ..29/626, 29/423, 156/249, m y Examiner-John R Campbell 174/685, 317/101 0, 317/101 cc, 339/17 R Ass/am m Church [51] Int. Cl. .......II05k 3/30, B2lp 17/00 Atwrney-Chr1st1e, Parker & a [58] Field of Search ..29/625, 626, 627, 423;

I 156/249; 317/101; 339/17 R [57] ABSTRACT A method for mounting a connector with molded-in [56] References Cited contacts on a printed circuit board using adhesive UNITED STATES PATENTS material for temporarily bonding the connector to the board during the time that the terminal pins of the 2,983,853 5/1961 W1ll1ams ..29/ 626 UX m1ded in contacts are permanently bonded to the 2,934,814 5/1960 Williams et al... m 1 3,114,807 12/1963 Koda 12/1964 Saunders .L ...29/626 X 1 Claim, 3 Drawing Figures PATENTEDHEE 5 m2 I N VEN TOR 055? 7 0- MFA 50/\/ METHOD FOR MOUNTING CONNECTORS ON PRINTED CIRCUIT BOARDS BACKGROUND OF THE INVENTION 1. Field of the Invention This invention pertains to methods for permanently bonding connectors to printed circuit boards.

2. Description of the Prior Art Present methods for fastening connectors to printed circuit boards make use of nuts, bolts, washers, and spacers. This is time-consuming and prevents closer spacing of the boards. Furthermore, before the actual bolting can take place, the connector is capable of shifting its position on the board causing misalignment and difficulties in fabrication. It is desirable, therefore, to eliminate the possibility of such shifting or slippage and to further decrease the time and expense involved in permanently fastening the connector to the printed circuit board.

SUMMARY OF THE INVENTION This invention overcomes the disadvantages heretofore mentioned inherent in present day methods for mounting connectors onto printed circuit boards. An adhesive material is affixed to a portion of a connector body which contains molded-in contacts having terminal pins extending from the body. The connector is positioned over the board such that a terminalpin from each of the molded-in contacts passes through a distinct one of a plurality of apertures formed in the board and designed to accommodate such terminal pins. Force is then exerted on the connector body in order to affix another portion of the adhesive material to the board such that the connector body is temporarily bonded to the board by the adhesive material. Those terminal pins which have been passed through the apertures are then secured to conductive members, mounted on the board peripherally about the apertures and which form part of the printed circuit, such that the connector body is permanently bonded to the board and its molded-in contacts are permanently and conductively connectedto the printed circuit.

As a result, an inexpensive and rapid method and apparatus is provided for temporarily holding the connector in place on the printed circuit board until the terminal pins are permanently secured thereto in the manner above described.

BRIEF DESCRIPTION OF THE DRAWING FIG. 1 is a perspective elevation view of a connector with molded-in contacts and L-shaped terminal pins on the ends of the contacts.

FIG. 2 is a side elevation view of the connector of FIG. 1 with adhesive material and removable paper backing affixed thereto.

FIG. 3 is a side view of the connector of FIG. 2 with the paper backing removed and the connector mounted on a printed circuit board according to the invention.

DESCRIPTION OF THE PREFERRED EMBODIMENT FIG. I shows one type of connector 10, for mounting on a printed circuit board, having a connector body 12, molded-in contacts 14, and terminal pins 16 formed on one end of the contacts 14. According to the invention, adhesive material 18, such as double-side tape (FIG. 2), is affixed to the bottom face 20 of the connector body 12. As shown in FIG. 2, a removable non-adhesive backing 22 is affixed to the side of adhesive 18 which is not affixed to connector body 12. This backing is useful during the storage of the connectors prior to mounting on the printed circuit board.

Printed circuit board 24 shown in FIG. 3, has a plurality of apertures 26 therein (only one being shown) which are designed to accommodate terminal pins 16 when the connector is mounted on the board. Conductive members 28 are permanently mounted on the board and form part of the printed circuit. These members 28 are fabricated such that, when mounted, each peripherally surrounds a respective one of apertures 26. Solder 30 is used to permanently and conductively couple terminal pins 16 to members 28 and thus the printed circuit. 7

The exact method of permanently mounting connector 10 on printed circuit board 24 consists of the steps of affixing one side of adhesive material 18 to the bottom face 20 of connector body 12, such adhesive having removable non-adhesive backing 22 affixed to its other side; removing backing 22; positioning connector 10 over printed circuit board 24 such that its bottom face 20 is substantially parallel with the printed circuit board; moving connector If substantially perpendicularly toward board 24 until terminal pins 16 pass through their respective apertures 26; exerting force on the upper face of connector body 12 in order to insure that the other side of the adhesive has become adhesively bonded with the printed circuit board, such that the connector 10 is temporarily bonded to the board 24; and soldering terminal pins l6'to their respective members 28 mounted on the board, such that connector 10 is permanently mounted to the board and its molded-in contacts 14 are permanently conductively connected to the printed circuit through members 28.

It is important to note that adhesive material 18 is immaterial after permanentbonding is effectuated by solder 30. Any consequent loss of adhesiveness by adhesive material 18 is, therefore, inconsequential and irrelevant. The sole purpose of the adhesive is to temporarily bond connector 10 to circuit board 24 before and during the time that it is permanently affixed and conductively connected thereto by solder 30 in the manner above described.

What has been disclosed, therefore, is an inexpensive and rapid method and apparatus for first temporarily and then permanently bonding a connector onto a printed circuit board.

Although one embodiment of the invention has been shown by way of example, other embodiments will be evident to those skilled in the art. For example, the pins 16 may extend out of the bottom surface 20 of the connector or out of other parts of the connector.

Iclaim:

l. A method for mounting a connector to a surface of a printed circuit board of a first large size, wherein the connector includes a connector body having an elongated planar surface of a second, smaller size and having a plurality of electrical contacts, the contacts having parallel terminal pins formed at one end and projecting from the body perpendicular to the connector body surface, the contacts having male connector pins at their opposite ends projecting from the body parallel to the connector body to permit a mating electrical connection thereto, the printed circuit board surface having near one of its marginal edges at spaced apart locations corresponding to the spacing between the terminal pins a plurality of apertures each being large enough to accommodate a respective one of the terminal pins, and a conductive member disposed about each of said apertures, the method comprising the steps of:

adhesively affixing to the connector body surface a first side of a piece of tape having pressure-sensitive adhesive material covering a second, opposite side and a removable non-adhesive backing covering the adhesive material; removing the backing from the tape to expose the adhesive material; positioning the smaller size connector body surface having the exposed adhesive material adjacent to the larger size printed circuit board while passing each of the terminal pins through a distinct one of the apertures and orienting the male connector pins parallel with the printed circuit board and projecting away from said marginal end of the printed circuit board surface;

exerting a force on the connector body in the direction of the printed circuit board in order to affix the exposed adhesive material covering the tape to the larger size printed circuit board such that the connector body is temporarily bonded to the board by the exposed adhesive material; and

soldering the terminal pins to the conductive members about the apertures thereby mechanically affixing the connector body to the circuit board and electrically connecting the terminal pins to the conductive members.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2934814 *Jun 4, 1954May 3, 1960Bert GreeneMethod of making an electronic components package
US2983853 *Oct 1, 1958May 9, 1961Raytheon CoSemiconductor assembly structures
US3114807 *Oct 23, 1959Dec 17, 1963Clare & Co C PSealed switch unit mounted on printed circuit board
US3158927 *Jun 5, 1961Dec 1, 1964Burroughs CorpMethod of fabricating sub-miniature semiconductor matrix apparatus
US3350250 *Feb 12, 1964Oct 31, 1967North American Aviation IncMethod of making printed wire circuitry
US3388465 *Mar 1, 1965Jun 18, 1968Burroughs CorpElectronic assembly soldering process
US3538389 *Feb 24, 1969Nov 3, 1970Donald E HarperSubelement for electronic circuit board
Non-Patent Citations
Reference
1 *IBM Tech Disclosure, Vol. 9 No. 11 April 1967, by Penna et al., entitled Assembly of Circuit Cards through the use of Tape Adhesives, Page 1625.
2 *Printed and Integrated Circuitry, by Schlabach & Rider, pages 254 and 255.
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3881245 *Feb 26, 1974May 6, 1975Lucas Aerospace LtdMounting electrical components on thick film printed circuit elements
US3966110 *Mar 11, 1975Jun 29, 1976Hollis Engineering, Inc.Stabilizer system with ultrasonic soldering
US3973322 *May 13, 1974Aug 10, 1976Hollis Engineering, Inc.Mass soldering system and method
US3978566 *Jan 17, 1975Sep 7, 1976Federal-Mogul CorporationProcess for making sectionalized precision components
US4055725 *Feb 2, 1976Oct 25, 1977Hollis Engineering, Inc.Circuit board assembly
US4127692 *Sep 23, 1974Nov 28, 1978Hollis Engineering, Inc.Jig for mass soldering system
US4178678 *Mar 28, 1978Dec 18, 1979Bell Telephone Laboratories, IncorporatedApparatus and method for affixing bondable finger contacts to a printed circuit board
US4179322 *Mar 28, 1978Dec 18, 1979Bell Telephone Laboratories, IncorporatedMethod for making bondable finger contacts
US4208005 *Feb 6, 1979Jun 17, 1980Hitachi, Ltd.Method for mounting parts on circuit boards
US4216051 *Jul 11, 1979Aug 5, 1980Bell Telephone Laboratories, IncorporatedFor application to printed circuit boards
US4269870 *Feb 2, 1976May 26, 1981Cooper Industries, Inc.Stabilization of the electronic components inserted into printed circuits by coating the connectors with a melted solder-compatible compound and hardening; waxes; addition polymers
US4314870 *Feb 13, 1980Feb 9, 1982Matsushita Electric Industrial Co., Ltd.Method of mounting electronic components
US4363076 *Dec 29, 1980Dec 7, 1982Honeywell Information Systems Inc.Integrated circuit package
US4635356 *Aug 15, 1985Jan 13, 1987Kabushiki Kaisha ToshibaEncapsulating electrical elements in resin, but leaving terminal for connection
US4872937 *Jul 14, 1988Oct 10, 1989Gte Products CorporationElectrical component and method of mounting same
US4873397 *Dec 28, 1987Oct 10, 1989Tdk CorporationElectronic circuit element
DE3104623A1 *Feb 10, 1981Aug 26, 1982Bosch Gmbh RobertVerfahren zum befestigen von bauelementen mit flaechigen anschlusskontakten und bauelement hierfuer
DE4211355A1 *Apr 4, 1992Oct 7, 1993Thomson Brandt GmbhCircuit board component mounting system - has adhesive between circuit component and circuit board section having rupture line allowing easy subsequent removal
Classifications
U.S. Classification29/834, 29/843, 29/423, 361/779, 156/249, 174/260, 439/78, 174/267
International ClassificationH05K3/30, H05K3/34
Cooperative ClassificationH05K3/306, H05K2203/0278, H05K3/3447, H05K2201/10446, H05K2201/10189, H05K2203/0191, H05K3/305
European ClassificationH05K3/30D
Legal Events
DateCodeEventDescription
Nov 22, 1988ASAssignment
Owner name: UNISYS CORPORATION, PENNSYLVANIA
Free format text: MERGER;ASSIGNOR:BURROUGHS CORPORATION;REEL/FRAME:005012/0501
Effective date: 19880509
Jul 13, 1984ASAssignment
Owner name: BURROUGHS CORPORATION
Free format text: MERGER;ASSIGNORS:BURROUGHS CORPORATION A CORP OF MI (MERGED INTO);BURROUGHS DELAWARE INCORPORATEDA DE CORP. (CHANGED TO);REEL/FRAME:004312/0324
Effective date: 19840530